41. WHICH STATEMENT IS TRUE: A. green light excites green cones, excites red-gre

Question

41. WHICH STATEMENT IS TRUE: A. green light excites green cones, excites red-green ganglion B. green light excites green cones, inhibits red-green ganglion C. blue light inhibits blue cones, inhibit yellow-blue ganglion D. blue light inhibits blue cones, excites yellow-blue ganglion 42. THE EYE COLOR IS DUE TO: A. cornea B. iris C. sclera D. retina 43. RODS IN THE RETINA: A. detect colors B. are more sensitive to light than cones C. are most numerous in the fovea D. provide our best visual acuity 44. WHAT STRUCTURAL ELEMENT OF THE EYE PRODUCES A BLIND SPOT: A. the fovea B. the optic chiasm C the optic radiation D. the optic disk 45. HUMAN RETINA CONTAINS A) 120 million cones; 6 million rods B) 6 million cones; 120 million rods C) 6 million cones; 12 million rods D) equal number of cones and rods 46. CONES IN THE RETINA: A. detect black and white B. are more sensitive to light than rods C. are most numerous in the periphery D. provide our best visual acuity 47. WHICH OF THE FOLLOWING IS NOT A FUNCTION OF THE MAGNOCELLULAR YSTEM: A. movement B. form C. depth D. color 48. WHICH OF THE FOLLOWING IS A FUNCTION OF THE PARVOCELLULAR VISUAL SYSTEM: A. blue color perception B. green color perception C. depth 49. THE OPTIC NERVES ARE THE AXONS OF: A. retinal neurons B. cortex neurons C) bipolar neurons D) ganglion neurons 50. RETINAL GANGLION CELLS HAVE: A. circular visual fields B. rectangular visual fields C. respond only to black and white D. respond only to color

Explanation / Answer

1. The correct answer is option B. A person's eye color is actually the color of one's iris. The cornea istransparent and the sclera is white in color.

2. The correct answer is option B.The rods are most sensitive to light and dark changes, shape and movement and contain only one type of light-sensitive pigment. Rods are not good for color vision.

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